mirror of
https://github.com/kataras/iris.git
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186 lines
7.4 KiB
Markdown
186 lines
7.4 KiB
Markdown
# 更新记录
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### 想得到免费即时的支持?
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https://github.com/kataras/iris/issues
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https://chat.iris-go.com
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### 获取历史版本?
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https://github.com/kataras/iris/releases
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### 我是否应该升级 Iris?
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如果没有必要，不会强制升级。如果你已经准备好了，可以随时升级。
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> Iris 使用 Golang 的 [vendor directory](https://docs.google.com/document/d/1Bz5-UB7g2uPBdOx-rw5t9MxJwkfpx90cqG9AFL0JAYo) 特性, 避免依赖包的更改带来影响。
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**如何升级**: 打开命令行执行以下命令: `go get -u github.com/kataras/iris` 或者等待自动更新。
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# 2018 元旦 | v10.0.0 版本发布
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我们必须感谢 [Mrs. Diana](https://www.instagram.com/merry.dii/) 帮我们绘制的漂亮 [logo](https://iris-go.com/images/icon.svg)!
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如果有设计相关的需求，你可以[发邮件](mailto:Kovalenkodiana8@gmail.com)给他，或者通过 [instagram](https://www.instagram.com/merry.dii/) 给他发信息。
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<p align="center">
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<img width="145px" src="https://iris-go.com/images/icon.svg?v=10" />
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</p>
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在这个版本中，有许多内部优化改进，但只有两个重大变更和新增一个叫做 **hero** 的特性。
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> 新版本有 75 + 的变更提交, 如果你需要升级 Iris 请仔细阅读本文档。 为什么版本 9 跳过了? 你猜...
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## Hero 特性
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新增包 [hero](hero) 可以绑定处理任何依赖 `handlers` 的对象或函数。Hero funcs 可以返回任何类型的值，并发送给客户端。
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> 之前的绑定没有编辑器的支持, 新包 `hero` 为 Iris 带来真正的安全绑定。 Iris 会在服务器运行之前计算所有内容，所以它执行速度高，接近于原生性能。
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下面你会看到我们为你准备的一些截图，以便于理解:
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### 1. 路径参数 - 构建依赖
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### 2. 服务 - 静态依赖
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### 3. 请求之前 - 动态依赖
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`hero funcs` 非常容易理解，当你用过之后 **在也回不去了**.
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示例：
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- [基本用法](_examples/hero/basic/main.go)
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- [使用概览](_examples/hero/overview)
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## MVC
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You have to understand the `hero` package in order to use the `mvc`, because `mvc` uses the `hero` internally for the controller's methods you use as routes, the same rules applied to those controller's methods of yours as well.
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With this version you can register **any controller's methods as routes manually**, you can **get a route based on a method name and change its `Name` (useful for reverse routing inside templates)**, you can use any **dependencies** registered from `hero.Register` or `mvc.New(iris.Party).Register` per mvc application or per-controller, **you can still use `BeginRequest` and `EndRequest`**, you can catch **`BeforeActivation(b mvc.BeforeActivation)` to add dependencies per controller and `AfterActivation(a mvc.AfterActivation)` to make any post-validations**, **singleton controllers when no dynamic dependencies are used**, **Websocket controller, as simple as a `websocket.Connection` dependency** and more...
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示例:
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**如果你之前使用过 MVC ，请仔细阅读：MVC 包含一些破坏性的改进，但新的方式可以做更多，会让程序执行更快**
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**请阅读我们为你准备的示例**
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如果你现在需要升级，请对比新旧版本示例的不同，便于理解。
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| NEW | OLD |
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| -----------|-------------|
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| [Hello world](_examples/mvc/hello-world/main.go) | [OLD Hello world](https://github.com/kataras/iris/blob/v8/_examples/mvc/hello-world/main.go) |
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| [Session Controller](_examples/mvc/session-controller/main.go) | [OLD Session Controller](https://github.com/kataras/iris/blob/v8/_examples/mvc/session-controller/main.go) |
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| [Overview - Plus Repository and Service layers](_examples/mvc/overview) | [OLD Overview - Plus Repository and Service layers](https://github.com/kataras/iris/tree/v8/_examples/mvc/overview) |
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| [Login showcase - Plus Repository and Service layers](_examples/mvc/login) | [OLD Login showcase - Plus Repository and Service layers](https://github.com/kataras/iris/tree/v8/_examples/mvc/login) |
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| [Singleton](_examples/mvc/singleton) | **新增** |
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| [Websocket Controller](_examples/mvc/websocket) | **新增** |
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| [Vue.js Todo MVC](_examples/tutorial/vuejs-todo-mvc) | **新增** |
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## context#PostMaxMemory
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移除旧版本的常量 `context.DefaultMaxMemory` 替换为配置 `WithPostMaxMemory` 方法.
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```go
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// WithPostMaxMemory sets the maximum post data size
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// that a client can send to the server, this differs
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// from the overral request body size which can be modified
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// by the `context#SetMaxRequestBodySize` or `iris#LimitRequestBodySize`.
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//
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// 默认值为 32MB 或者 32 << 20
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func WithPostMaxMemory(limit int64) Configurator
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```
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如果你使用老版本的常量，你需要更改一行代码.
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使用方式：
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```go
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import "github.com/kataras/iris"
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func main() {
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app := iris.New()
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// [...]
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app.Run(iris.Addr(":8080"), iris.WithPostMaxMemory(10 << 20))
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}
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```
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## context#UploadFormFiles
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新方法可以多文件上传, 应用于常见的上传操作, 它是一个非常有用的函数。
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```go
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// UploadFormFiles uploads any received file(s) from the client
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// to the system physical location "destDirectory".
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//
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// The second optional argument "before" gives caller the chance to
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// modify the *miltipart.FileHeader before saving to the disk,
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// it can be used to change a file's name based on the current request,
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// all FileHeader's options can be changed. You can ignore it if
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// you don't need to use this capability before saving a file to the disk.
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//
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// Note that it doesn't check if request body streamed.
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//
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// Returns the copied length as int64 and
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// a not nil error if at least one new file
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// can't be created due to the operating system's permissions or
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// http.ErrMissingFile if no file received.
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//
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// If you want to receive & accept files and manage them manually you can use the `context#FormFile`
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// instead and create a copy function that suits your needs, the below is for generic usage.
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//
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// The default form's memory maximum size is 32MB, it can be changed by the
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// `iris#WithPostMaxMemory` configurator at main configuration passed on `app.Run`'s second argument.
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//
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// See `FormFile` to a more controlled to receive a file.
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func (ctx *context) UploadFormFiles(
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destDirectory string,
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before ...func(string, string),
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) (int64, error)
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```
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这里是相关示例 [here](_examples/http_request/upload-files/main.go).
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## context#View
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这里有个小更新，增加可选的第二个参数，用来绑定模版变量。
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当只有一个模版变量，之前是在 `ViewData` 上绑定一个空字符串，现在可以预先绑定模版变量到指定模版。
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```go
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func(ctx iris.Context) {
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ctx.ViewData("", myItem{Name: "iris" })
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ctx.View("item.html")
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}
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```
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等同于：
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```go
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func(ctx iris.Context) {
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ctx.View("item.html", myItem{Name: "iris" })
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}
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```
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```html
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html 模版中调用: {{.Name}}
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```
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## context#YAML
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新增 `context#YAML` 函数, 解析结构体到 yaml。
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```go
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//使用 yaml 包的 Marshal 的方法解析，并发送到客户端。
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func YAML(v interface{}) (int, error)
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```
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## Session#GetString
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`sessions/session#GetString` 可以获取 session 的变量值（可以是 integer 类型），就像内存缓存、Context 上下文储存的值。
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